Improvement in eyeglass



M. C. BRACKETT.

Eye-Glass Frame. l N0, 1651,658, H PatenteqAprnJaza "iivrrED STATESyPATENT EEroE.

MARRIOK C. BRAOKETT, OF HOLLAND, MASSACHUSETTS, ASSIGrNOR TO GEORGE B.BRIGDEN, OF NOBWIOH, CONNECTICUT.

iMPRovEMENTlN EvEeLAss-r-EAmsa Specification forming part of LettersPatent No. 161,658, dated April 6, 1875; application led November 18,1874.

To all whom it may concern:

Be it known that I, MARRICK O. BRACKETT, of Holland, in Hampden countyand State of Massachusetts, have invented certain Improvements inAdjustable Eyeglasses, of which the following is a specification:

My invention consists in attaching a side spring to a joint or post uponthe lower inner part of each eye-frame, which springs are bent nearly atright angles, and extend straight upward above the posts to which thebridgespring is attached, being faced with any suitable roughenedmaterial, forming two nosepieces, and also in attaching a re-enforcingspring to each bridge-post, which extends inward and downward againstthe above side springs to support their free upper ends, the object ofmy invention being to vary and adjust the pressure at both the top andbottom of the nose-pieces, so as to produce a closer and easier fit toany shape of the wearers nose, and also to give a longer and straightbearing upon the sides of the nose, so that by varying the stiffness ofthese side and re-enforcing springs, the pressure of the nosepieces uponthe sides of the nose can be adjusted to t with an ease and adhesionnever before attained.

The accompanying drawing shows my improved eyeglasses in the positionwhich they assume when opened ready to be put upon the nose. l

A A are the ordinary eye-frames, which are provided with joints upon thelower part of the frames at a a.; or, if preferred, they may have postsattached at ct a, and the joints may be made at some other point. B isthe bridgespring, which hasiits ends secured upon the posts b b, whichare attached upon the upper part of the frames.

My improvement consists of the side springs C C, which are each securedin the joints, or upon posts at a c, and after extending out a suitabledistance they are bent up, so as to extend nearly or quite straightupward, terminating in free ends above the posts b band under thebridge-spring B, thus having their free ends covered and protected atall times@V whether the eyeglasses are open or closed-Y by thebridge-spring. These side springs are provided with the ordinaryroughened facin gs, forming nose-pieces, and also have their upper endssupported by the re-enforcing springs E E.

These springs E E are preferably fastened over the top of the ends ofthe bridge-spring B upon the posts b b by the same screw which fastensthe bridge-spring upon these posts, so that their ends overlap a smallportion of the ends of the bridge-spring, to strengthen it at thescrew-holes; or these re-enforcing springs may be continuations of theends of the bridgespring, extending below the posts b b. By this`vconstruction, both the side springs and the re-enforcing springs aresecured only at one end, while their other end is left entirely free,thus giving them much greater elasticity and freedom of motion, andbecause of their being fastened only at one end every piece isinterchangeable, thus effecting a great saving of time over many of theordinary glasses, in which each piece must be Itted to its place 5 and,again, since the action of the re-enforcing springs is separate anddistinct from the side springs, by varying their stiff'- ness, in regardto each other and to the bridgespring, the pressure at the ends of thenosepieces can be varied or equalized as desired.

This arrangement of parts, while compact and strong, presents a veryneat and artistic appearance.

I claim as my invention- The eye-frames A A, having the side springs OC, provided with roughened facings, and fastened in the joints or postsa a, and extending upward above the posts b b, and also hav-y ing there-enforcing springs E E projecting below the posts b b, to support theupper free ends of the side springs, substantially as and for thepurpose set forth.

MABRICK C. BRAOKETT.

A Witnesses:

A. F. PARK, WEBSTER PARK.

